Space stacking light beam distributed phase delayer and speckle elimination method thereof
A phase retarder, stacking technology, applied in optics, instruments, optical components, etc., can solve the problems of high manufacturing cost and large structure, and achieve the effects of low cost, simple device structure and convenient assembly.
Inactive Publication Date: 2017-05-10
SHANXI UNIV
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The present invention relates to a space stacking light beam distributed phase delayer and a speckle elimination method thereof, and relates to the light beam regulation and control dissipated speckle technology. The problems are solved that the structure of the current device of inhibiting laser speckles is large, and the manufacturing cost is high. Polymer micromachining elements or machining transmitting elements are employed, the structure of each polymer micromachining element is an m*n matrix formed by the polymer micromachining element having a certain height difference; the structure of each machining transmitting element is formed by assembling the machining transmitting elements having a certain height difference and having the refractive index being not equal to the air refractive index; the height difference of the polymer micromachining elements or the machining transmitting elements is randomly arranged and satisfies that the optical path difference is larger than or equal to the coherent length LC and the laser coherence is destroyed in the time; and the arrangement of the number of the elements, the length and the arrangement mode is that: a single-beam laser is divided into a plurality of non-coherent illumination light sources, and satisfies that the areas of the non-coherent illumination light sources are larger than or equal to the coherent area AC, and the laser coherence is destroyed in the space.
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